package com.ruoyi.common.config;

import com.fasterxml.jackson.annotation.JsonInclude;
import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.core.json.JsonReadFeature;
import com.fasterxml.jackson.databind.DeserializationFeature;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.SerializationFeature;
import com.fasterxml.jackson.databind.module.SimpleModule;
import com.fasterxml.jackson.databind.ser.std.ToStringSerializer;
import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;
import org.springframework.http.converter.json.Jackson2ObjectMapperBuilder;

import java.text.SimpleDateFormat;
import java.util.TimeZone;

/**
 * jackson  序列化配置
 *
 * @author zhouhaicheng
 * @description:
 * @date 2023/7/5 17:34
 */
@Configuration
public class JacksonConfig {

  @Bean
  @Primary
  @ConditionalOnMissingBean(ObjectMapper.class)
  public ObjectMapper jacksonObjectMapper(Jackson2ObjectMapperBuilder builder) {
    ObjectMapper objectMapper = builder.createXmlMapper(false).build();

    //设置时区
    objectMapper.setTimeZone(TimeZone.getTimeZone("GMT+8"));
    // 时间格式转化
    objectMapper.setDateFormat(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"));

    // 通过该方法对mapper对象进行设置，所有序列化的对象都将按改规则进行系列化
    // Include.Include.ALWAYS 默认
    // Include.NON_DEFAULT 属性为默认值不序列化
    // Include.NON_EMPTY 属性为 空（""） 或者为 NULL 都不序列化，则返回的json是没有这个字段的。这样对移动端会更省流量
    // Include.NON_NULL 属性为NULL 不序列化
    objectMapper.setSerializationInclusion(JsonInclude.Include.NON_EMPTY);

    //缩进输出
    objectMapper.configure(SerializationFeature.INDENT_OUTPUT, true);

    //未对应的属性，不处理
    objectMapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);

    // 允许出现特殊字符和转义符
    objectMapper.configure(JsonReadFeature.ALLOW_UNESCAPED_CONTROL_CHARS.mappedFeature(), true);

    // 允许出现单引号
    objectMapper.configure(JsonParser.Feature.ALLOW_SINGLE_QUOTES, true);

    // 全局配置序列化返回 JSON 处理  JSON Long ==> String
    SimpleModule simpleModule = new SimpleModule();
    simpleModule.addSerializer(Long.class, ToStringSerializer.instance);
    objectMapper.registerModule(simpleModule);

    return objectMapper;
  }
}
